Improvement in mill-bolts



W. H. BBRDAN.

Flour Bolt.

No. 103,833. Patented June 7, 1870.

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WILSON H BERDAN, OF MOOREVILLE, MICHIGAN.

Letters Patent No. 103,833, dated June 7, 1870.

IMPROVEMENT IN MILL-BOLTS.

The Schedule referred to in these Letters Patent and making part of the same.

To all ,whom it may concern:

Be it known that I, WILSON H. BERDAN, of Moorerille, in the county of Washtenaw and in the State -of Michigan, have invented certain new'and useful lmprovements in Mill-Bolts; and do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawing and to the letters of reference marked thereon making a part of this specification.

The nature of my invention consists in the con-- struction and arrangement of-a flour-bolt, as will be hereinaiier fully set forth.

In order to enable others'skilled in the'art to which my invention appertains to make and-use the same,-'I I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure 1 is a transverse vertical section, and Figure 2 is a longitudinal vertical section of my flour-bolt.

Figure 3 is an enlarged end view of one of the ribs. 'A represents the central shaft of the flour-bolt, from which radiate a number of series of arms, B B, to-the outer ends of which the ribs 0 G are attached, all of said ribs running parallel with the axle or shaft A The ribs 0 C are three-cornered, the longest side being inside of the bolt, the cloth being secured to the two shortest sides, thus bringing a flat surface without corners inside of the bolt.. This causes the flour to slide quietly along leaving the bran on top of the flour all the time.

The best flour-bolts are those which are as near round as possible, having no sharp corners in which the flour 'will be caught. In most all the bolts now in use there are such sharp corners which carry the flour upward, letting, it fall down again, turning it, and causing specks in the flour. 'By having the flat ribs 0 0, there are no sharp corners, and the flour is caused to slidesmoothly along without turning, leaving the bran on the top.

On the outside of the bolt are placed wooden hoops or'bands,:E E, which hold theribs to their places. For eachotfthese hoops or hand I can dispense with one setror series of (six) arms inside of the bolt.

These arms B B continually carry more or less flournp with them, and letting it fall againyso that I consider 'i'tiquite an object to lessen the number of thesearms as much as possible. With three hoops terior hoops E, all substantially as set forth.

In testimony that I claim the foregoing, I have hereunto set my hand this day of 1870.

W. H. BERDAN.

Witnesses:

J. It. Bownns, I H. N. Bownns. 

